How many factors of 23 × 33 × 54 ×91× is divisible by 50 but not by 100?
50=52×2 100=52×22 23 × 33 × 54 × 91 =52×2(22×52×33×91) =52×33×91 Total factor=3×4×2 =24.
Speed of a boat in still water is 10 kmph and speed of stream is 7 kmph. A man rows to a place at a distance of 51 km and come back to starting point. T...
A man can go on a motor boat with a speed of 25 km/hour in still water to a certain upstream point and come back to the starting point in a river which ...
The speed of a boat in still water is 6 km/hr more than that of the current. The time taken by the boat to cover 675 km downstream is 13.5 hours. Find t...
A boat running downstream covers a distance of 48 km in 3 hrs and covering the same distance upstream in 12 hrs. What is the speed of a boat in still wa...
Ratio of speed of boat in downstream and speed of stream is 7:3, if speed of current is 9 km/hr, then find distance travelled (in km) upstream in 6 hours.
A ship, when moving against the current, can travel a distance of 240 km in 8 hours. If the ship's speed in calm waters is 40 km/hr, how many hours will...
A boat goes 8 km an hour in still water, but takes twice as much time in going the same distance against the current. The speed of the current (in km/ho...
If the sum of upstream and downstream speed is 32 km/hr and the speed of the current is 6 km/hr. Then find time taken to cover 44 km in downward?
A man rows to a place 42 km away and comes back to the starting point. If the speed of the stream is 2 km/hr and the speed of the boat in still water is...
Sumit can swim 12 km upstream and 16 km downstream in 5 hours. If ratio of speed of stream to that of speed of Sumit in upstream is 1:2, then find the s...